280222115 has 4 divisors (see below), whose sum is σ = 336266544. Its totient is φ = 224177688.

The previous prime is 280222091. The next prime is 280222171. The reversal of 280222115 is 511222082.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 280222115 - 2²⁰ = 279173539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28022207 + ... + 28022216.

It is an arithmetic number, because the mean of its divisors is an integer number (84066636).

Almost surely, 2^280222115 is an apocalyptic number.

280222115 is a deficient number, since it is larger than the sum of its proper divisors (56044429).

280222115 is an equidigital number, since it uses as much as digits as its factorization.

280222115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56044428.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 280222115 is about 16739.8361700466. The cubic root of 280222115 is about 654.3862050999.

Adding to 280222115 its reverse (511222082), we get a palindrome (791444197).

The spelling of 280222115 in words is "two hundred eighty million, two hundred twenty-two thousand, one hundred fifteen".